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Security

Microsoft security updates and public advisory evidence: affected products, fixing updates, exploitation and source coverage.

Security Update Guide CISA KEV
1474Microsoft CVEsreleased Tue 13 Oct 94Critical81 need an update · 13 fixed service-side 1Exploited in the wild
1Publicly disclosed
1In CISA KEV
256Revised since release

September 2026: 998 CVEs · 132 critical · 2 exploited · 2 in CISA KEV

Act first · October 2026

Exploited, KEV-listed, or publicly disclosed
CVE-2026-96951ImportantExploitedCISA KEV · due 16 OctSFBNetwork
Windows Shell Security Feature Bypass Vulnerability
CVSS 8.8 KB5126646KB5126651KB5126653+6
Patch next · critical, "exploitation more likely", or top 5% EPSS · needs an update183
CVSS 8.1 · EPSS 1.4% KB5128895KB5128896KB5128897+1
CVSS 8.1 · EPSS 1.0% KB5126646KB5126651KB5126653+7
CVSS 8.8 · EPSS 2.7% KB5129955KB5129956KB5129957+1
Showing 3 of 183All critical

CVEs · October 2026

262 matches · most urgent first CSVText
CVE Vulnerability Severity CVSSEPSSImpact StatusFixed by
CVE-2026-85909 Windows Universal Disk Format File System Driver (UDFS) Information Disclosure VulnerabilityWindows Universal Disk Format File System Driver (UDFS) Important 5.50.4%Information DisclosureLocal
KB5126646KB5126651+8
CVE-2026-85910 Windows StateRepository API Information Disclosure VulnerabilityWindows StateRepository API Important 5.50.4%Information DisclosureLocal
KB5126646KB5127646+1
CVE-2026-85935 Windows USB Driver Information Disclosure VulnerabilityWindows USB Driver Important 5.50.4%Information DisclosureLocal Revised 28 Oct
KB5126646KB5126651+8
CVE-2026-85938 Windows Broadcast DVR User Service Information Disclosure VulnerabilityWindows Broadcast DVR User Service Important 5.50.3%Information DisclosureLocal
KB5126651KB5126653+3
CVE-2026-87698 Windows Remote Access Service Infrastructure Information Disclosure VulnerabilityWindows Remote Access Service Infrastructure Important 5.50.4%Information DisclosureLocal
KB5126646KB5126651+8
CVE-2026-88140 Windows Key Storage Provider Information Disclosure VulnerabilityWindows Key Storage Provider Important 5.50.4%Information DisclosureLocal
KB5126646KB5126651+6
CVE-2026-88158 Microsoft Digest Authentication Information Disclosure VulnerabilityMicrosoft Digest Authentication Important 5.50.3%Information DisclosureLocal
KB5126646KB5126651+8
CVE-2026-95904 Windows Event Logging Service Information Disclosure VulnerabilityWindows Event Logging Service Important 5.50.3%Information DisclosureLocal
KB5126646KB5126651+8
CVE-2026-96183 Windows Health and Optimized Experiences Service Information Disclosure VulnerabilityWindows Health and Optimized Experiences Service Important 5.50.4%Information DisclosureLocal
KB5127646KB5127648
CVE-2026-96247 Windows Kernel-Mode Drivers Information Disclosure VulnerabilityWindows Kernel-Mode Drivers Important 5.50.4%Information DisclosureLocal
KB5126646KB5126651+7
CVE-2026-96314 Windows Audio Service Information Disclosure VulnerabilityWindows Audio Service Important 5.50.4%Information DisclosureLocal Revised 10 Nov
KB5126646KB5126651+8
CVE-2026-96321 Remote Desktop Display Driver Information Disclosure VulnerabilityRemote Desktop Display Driver Important 5.50.4%Information DisclosureLocal
KB5126646KB5126653+4

Advisories · October 2026

MSRC guidance without a CVE of its own · 1 advisory
ADV260001
Hardening changes for ReFS volumes on removable mediaStarting with Windows updates released on and after October 13, 2026, Microsoft is making hardening changes to the Resilient File System (ReFS) . This change is not enable by default until 2027. Please see Hardening changes for ReFS volumes on removable media for more information.
Published 13 Oct28 affected products
ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 11 Nov 21:06 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current

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